CN105474673A - Direct control signaling in a wireless communication system - Google Patents
Direct control signaling in a wireless communication system Download PDFInfo
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- CN105474673A CN105474673A CN201480044650.4A CN201480044650A CN105474673A CN 105474673 A CN105474673 A CN 105474673A CN 201480044650 A CN201480044650 A CN 201480044650A CN 105474673 A CN105474673 A CN 105474673A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/002—Mutual synchronization
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0025—Synchronization between nodes synchronizing potentially movable access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A first wireless communication device (14-1)belongs to a first (12-1) of multiple groups (12) of wireless communication devices(14). Devices (14) in any given group (12) are synchronized to the same timing reference and devices (14) in different groups (12) are not synchronized to the same timing reference. The first device (14-1) receives a message that indicates, for each of one or more of the groups (12), a range of possible values for misalignment between the timing reference of that group (12) and a common timing reference. The range accounts for uncertainty in that misalignment. The first device (14-1) determines, based on the one or more ranges, intervals of times during which direct control signaling is expected to be received at the first device (14-1) from one or more devices (14) in one or more other groups (12-2, 12-3). The first device (14-1) then adjusts intervals of times during which it is configured to operate in an awake state to narrowly encompass the intervals of times during which the direct control signaling is expected to be received.
Description
related application
This application claims the rights and interests of the U.S. Provisional Application 61/864,397 submitted on August 9th, 2013, the disclosure of this provisional application is incorporated into this by the mode quoted in full.
Technical field
The application relates generally to the method and apparatus in wireless communication system, and particularly, relates to the method and apparatus for direct control signal in such a system.
Background technology
Device-to-device (D2D) communication is many existing wireless technologys, comprises in self-organizing (adhoc) cellular network and knowing and the composition be widely used.The example of device-to-device communication comprises some variants, the such as WiFiDirect of bluetooth and IEEE802.11 standard cover group.These systems operate in non-licensed spectrum.
Device-to-device communication, as the bottom of cellular network, has been suggested and has utilized the propinquity of communication equipment as a kind of and allow equipment in controlled interference environment, carry out the means operated simultaneously.Usually, advise that the frequency spectrum identical with cellular system is shared in such device-to-device communication, such as, be used for device-to-device object by retaining some cellular uplink resources.It is a kind of unlikely alternative for distributing special frequency spectrum for device-to-device object, because frequency spectrum is scarce resource.In addition, (dynamically) between device-to-device service and cellular service shares and is more flexibly and provides higher spectrum efficiency.
Want to communicate with one another or be even only that the equipment found each other needs directly to transmit various forms of control signal among each other usually.Directly transmit the control signal of (that is, as device-to-device communication) between devices and be called as direct control signal in this article.An example of direct control signal is like this so-called discovery signal (being also referred to as beacon signal).Find signal at least carry certain form mark and by want can by the device transmission of other device discoveries.Other equipment can scanning discovery signal.Once other equipment have detected discovery signal, they can take suitable action.Such as, other equipment can be attempted initiating connection establishment with the equipment transmitting this discovery signal.
When the direct control signal of multiple device transmission (finding the direct control signal of signal or any other type), the transmission from distinct device may be time synchronized (mutual time alignment) or time irreversibility.Can such as by the cellular network from overlap or receive suitable signal to obtain synchronously from the GLONASS (Global Navigation Satellite System) of such as global positioning system (GPS) and so on.Usually be synchronized to by the cell special reference of this cell transmission by the discovery signal of the device transmission in community.Even if in asynchronous deployment, be it is beneficial that synchronized to each other for different districts, temporal resolution is maintained to up to from backhaul that temporal resolution obtainable.If NTP (Network Time Protocol) (NTP) is synchronous source, usually synchronously drift in the rank of +/-5ms.
Asynchronous may betide find that signal transmits between asynchronous community, carrier wave and/or public land mobile network (PLMN) in.According to ProSe requirement, the Wireless Telecom Equipment needs belonging to a community can find to quarter at the Wireless Telecom Equipment on another community.In addition, propinquity Wireless Telecom Equipment can quarter on different PLMN or different carrier waves.When different communities, carrier wave or PLMN are asynchronous, from the visual angle of device-to-device communication, there is not cell boarder.
ProSe research project recommends the device-to-device communication supporting the Wireless Telecom Equipment be used for outside the network coverage.Under these circumstances, different the synchronization options is possible: Wireless Telecom Equipment can be synchronized to universal reference (such as, GPS), and this universal reference is generally different from the reference synchronization of disposed network.Alternatively, Wireless Telecom Equipment can operate in completely asynchronous mode (not having reference synchronization).Other option be Wireless Telecom Equipment bunch be synchronized to specific Wireless Telecom Equipment, such as bunch head (ClusterHead, CH).This CH provides local synchronization to its neighbours' Wireless Telecom Equipment.Different bunches unnecessary is synchronous.
Wireless Telecom Equipment can by time they be configured/predefined resource on search find signal, find the asynchronous discovery signal on given carrier wave (or subband).This can such as pass through received signal relevant to finding the time domain of signal waveform come.It is similar for the mode of radio communication that this is similar to Wireless Telecom Equipment search cell in Long Term Evolution (LTE) standard.LTE uses master sync signal (PSS) and auxiliary synchronous signals (SSS).
Wireless Telecom Equipment can replace between wake-up states and sleep state (i.e. discontinuous reception (DRX)).During sleep state, memory and clock are active, but Wireless Telecom Equipment is configured to not monitor any direct control signal.At wake-up states (or wakeup time), this equipment is configured in fact monitor direct control signal.The power consumption that direct control signal reduces this equipment is not monitored during sleep state.
Summary of the invention
One or more embodiments are herein recognized, the asynchronous direct control signal between Wireless Telecom Equipment causes threat to the equipment that those have too much power consumption.In fact, the non-synchronized nature hint equipment of direct control signal must monitor the direct control signal (that is, remaining in wake-up states) from another equipment to guarantee any this signaling to be detected with acceptable delay in long-time section.But one or more embodiments herein advantageously make equipment can monitor asynchronous direct control signal, and unnecessaryly in so long-time section, keep wake-up states.
More specifically, at this on the one hand, embodiment herein comprises the first Wireless Telecom Equipment in first group of Wireless Telecom Equipment in many groups Wireless Telecom Equipment in a wireless communication system.Device synchronization in arbitrary given group is to same timing reference.On the contrary, the equipment in different groups is asynchronous to same timing reference.
In certain embodiments, such as, these groups correspond to the difference bunch of equipment.Each cocooning tool has a bunch head, this bunch of head be correspond to this bunch equipment and assign the equipment in this bunch thereon to the resource of the direct control signal of other device transmission.But in other embodiments, these groups correspond to the different districts in cellular communication system.The radio of the equipment in respective cell covers and is provided by radio network node.
No matter these groups correspond to bunch or correspond to community, in certain embodiments, first equipment is configured to receipt message, this message indicates the scope of the probable value of the deviation between the timing reference of this group and common timing reference for each group in one or more groups, the wherein uncertainty of this range specification (accountfor) this deviation.Based on one or more scopes of the message instruction received by this, the first equipment is determined to estimate to receive the time interval of direct control signal at the first equipment place from the one or more equipment other groups one or more during it.Made after this determines, the time interval that the first equipment during it is advantageously configured to carry out operating in wake-up states by the first equipment is adjusted to and just comprises the time interval that (narrowlyencompass) estimates to receive direct control signal during it.At this on the one hand, the first equipment detects the direct control signal from other equipment when operating in wake-up states, but does not monitor so direct control signal when operating in sleep mode.In certain embodiments, such as, the sleep of this equipment just around its timing of receiving to direct control signal between potential group of cutting regularly so that the direct control signal maximizing the length of one's sleep, avoid between omission group simultaneously.
In any case, in one embodiment, the scope of the message received by indicating the maximum in the probable value of the deviation between the timing reference of given group and common timing reference to indicate these probable values.
In one embodiment, common timing reference is the timing reference of some group in these groups.
In one embodiment, this message indicates the different range of the probable value of the deviation between the timing reference of this group and common timing reference at least one group in these groups 12.These different range are associated with the different resource being arranged between devices directly control channel.
In other embodiments, replace or combine the above message of reception, the first equipment is configured to the time interval independently estimating to estimate to receive so direct control signal during it.In one embodiment, such as, the first equipment the second equipment being configured to from these groups in second group receives direct control signal.Based on the reception to this direct control signal, the first equipment estimates the time interval estimating to receive from the equipment second group at the first equipment place direct control signal during it.The time interval that then the first equipment during it be configured to carry out operating (for receiving direct control signal from second group) in wake-up states by the first equipment is adjusted to and just comprises these time intervals determined as previously described.
In certain embodiments, this estimates to need the mark based on second group that extracts from direct control signal, is designated by the direct control signal received is received from the equipment second group from the second equipment.Then first equipment receive this timing reference of second group of timing acquisition of direct control signal or the scope of possible timing reference from utilizing it from the second equipment.Finally, based on the hypothesis equipment in second group being transmitted to direct control signal according to the scope of obtained timing reference or possible timing reference, estimation is performed.
In one or more embodiments, this estimation comprises the scope of the probable value of the deviation determined between first group and the timing reference of second group, the uncertainty of this this deviation of range specification.In certain embodiments, based in the following or multinomially determine this scope: the error margin that (i) makes the equipment in first group or second group be considered to be synchronized to same timing reference and to allow; (ii) inherence propagation between the equipment in first group or second group of radio node be associated and this group postpones; And the inherence propagation between equipment in (iii) different groups postpones.The communication protocol that can adopt based on the communication in different groups and/or between different groups determines a part for the scope of the probable value of deviation.
As how the opinion above-mentioned time interval is determined or to estimate, in certain embodiments, adjustment herein comprise compared to determine at the first equipment or estimate during it estimate to receive the time interval of direct control signal before, shorten the time interval that the first equipment during it is configured to carry out operating in wake-up states.
In one or more embodiments, as the result of adjustment, the first equipment is preferably done during the first equipment place can not receive the time interval of direct control signal in sleep mode in expectation.
In certain embodiments, nominally the first equipment ratio (nominally) is configured according to this adjustment be earlier transformed into sleep state.First device responds receives the decode direct control signal and so does during the time interval being in wake-up states at the first equipment.
In at least one embodiment, nominally the first equipment extends aperiodically or periodically during it, it is configured to the time interval carrying out operating in wake-up states according to adjustment, thus estimates the time interval that will receive direct control signal during making these time intervals no longer just be included in it.But, when receiving direct control signal during the time interval through extending, first equipment to readjust during it time interval that it is configured to carry out operating in wake-up states to estimate to receive the time interval of direct control signal during being just included in it, to illustrate that direct control signal is received during the time interval through extending.
In other other embodiments, nominally the first equipment is configured to operate in wake-up states during the time resource periodically reappeared, this time resource is just included in the time interval of the direct control signal of its period first equipment intended recipient.In the time quantum of definition, not yet on time resource, detect direct control signal in response to determining, the first equipment increases the periodicity of this time resource.But restarted direct control signal in response to detecting on time resource, the first equipment reduces the periodicity of this time resource.
Embodiment herein comprises corresponding device, computer program, carrier and computer program further.
Certainly, the invention is not restricted to above-mentioned feature and advantage.In fact, reading specific descriptions hereafter and after checking accompanying drawing, person of skill in the art will appreciate that more feature and advantage.
Accompanying drawing explanation
Fig. 1 is the block diagram comprising the wireless communication system of many group Wireless Telecom Equipments according to one or more embodiment.
Fig. 2 is the block diagram comprising the radio access network of the multiple communities corresponding with multiple groups of Fig. 1 according to one or more embodiment.
Fig. 3 is the logical flow chart of the method performed by the first Wireless Telecom Equipment according to one or more embodiment.
Fig. 4 illustrates how to adjust during it according to the first Wireless Telecom Equipment of one or more embodiment that it is configured to carry out the example in the time interval operated in wake-up states.
Fig. 5 is the logical flow chart of the method performed by the first Wireless Telecom Equipment according to other embodiments one or more.
Fig. 6 and 7 illustrates how to adjust during it according to the first Wireless Telecom Equipment of other embodiments one or more that it is configured to carry out the example in the time interval operated in wake-up states.
Fig. 8 is the block diagram of the first Wireless Telecom Equipment according to one or more embodiment.
Embodiment
Fig. 1 shows the wireless communication system 10 comprising many groups 12 Wireless Telecom Equipments 14.More specifically, Fig. 1 shows three equipment 14-1 to 14-3 of one group of 12-1 as an example, three equipment 14-4 to 14-6 of another group 12-2, and three of another group of 12-3 equipment 14-7 to 14-9.Equipment 14 in arbitrary given group 12 at least in the inter-sync of predefined " acceptable " error margin to same timing reference.Synchronous by this way, the equipment 14 in arbitrary given group 12 carries out timing according to this same timing reference to their transmission and reception.On the contrary, the equipment 14 that difference is organized in 12 is asynchronous to same timing reference, this means that the timing reference (and difference is organized the transmission of 12 and received timing thus) of different group 12 exists the risk of misalignment.
Radio node 16 is organized 12 with each and is associated.As shown in the figure, such as, radio node 16-1 is associated with group 12-1, and radio node 16-2 is associated with group 12-2, and radio node 16-3 is associated with group 12-3.The radio node 16 used in this article is configured to transmission and receives radio signals, and in certain ability, control one or more equipment in its group 12 be associated 14 (such as, by timing reference that control group 12 uses).
In certain embodiments, such as, different groups 12 corresponds to the different districts in cellular communication system.In this case, the radio node 16 in Fig. 1 is the radio network node (such as, base station) for the equipment 14 in their respective cell provides radio to cover.Therefore this situation is also properly called network (NW) coverage condition in this article, wherein equipment 14 be in cordless communication network covering within and communicate with network via the radio network node providing radio to cover for respective cell.
Fig. 2 by illustrate Wireless Telecom Equipment 14 be in the radio network node 18 (such as, base station) in radio access network 20 radio cover in and generally illustrates this network coverage situation.The community 22 that these radio network node 18 provide corresponds to the group 12 in Fig. 1, and can correspond to the different districts 22 of same public land mobile network (PLMN), different carriers or different PLMN.The equipment 14 being arranged in same community 22 (being stationed same community 22) is synchronized to same timing reference and typically obtains from the down link of this community 22 that this is synchronous.Which ensure that the transmission from distinct device 14 is all time synchronized, and be therefore roughly synchronous to the reception at locking equipment 14 place.This timing difference is directly proportional to distance and can be such as understood by the Cyclic Prefix in OFDM (OFDM).In either case, network coverage situation supposes that the equipment 14 discussed is enough close each other such as to come via device-to-device communication and directly to communicate each other, and whether tube apparatus 14 is not served by different radio network node 18.This hypothesis such as often proves real in the heterogeneous network utilizing grand radio network node and pico radio network node, micro-radio network node etc.
In other embodiments, the difference group 12 in Fig. 1 is corresponding to the difference bunch of equipment 14 being synchronized to same timing reference.This can be such as following situation: equipment 14 is not configured to communicate with any cordless communication network (or in brief not within the covering of this network), but the equipment 14 in arbitrary given bunch is but in the communication range each other for device-to-device communication.---this situation is also properly called the situation lacking the network coverage in this article---radio node 16 in Fig. 1 is so-called bunch of heads in this case.Bunch head used in this article is following Wireless Telecom Equipment 14, and it not only belongs to the group 12 of equipment 14 and the equipment 14 in certain ability in control group 12; Namely, bunch head as be synchronized to same timing reference equipment 14 bunch head.In certain embodiments, bunch head such as has Special controlling power, will transmit the resource of direct control signal thereon in order to the equipment 14 in this bunch of assigning to other equipment 14.That is, be not equipment 14 they oneself independently determine at the direct control signal of which transmitted over resources (such as, may in the subset of pre-configured resource, such as particular sub-band is interior), but bunch head represents bunch entirety and makes this decision-making.Bunch head carrys out the equipment 14 in control group 12 for the timing reference alternatively or additionally used by control group 12.
Form community or formation bunch regardless of the group 12 in Fig. 1, equipment 14 transmits so-called direct control signal from other equipment 14 in same group 12 or different groups 12.At this on the one hand, direct control signal refer to directly transmit between equipment 14 control signal, namely communicate as the device-to-device (D2D) not relating to any intermediate node.An example of this direct control signal is that equipment 14 transmits so that the what is called found by other contiguous equipment 14 finds signal (being also referred to as beacon signal).Unless pointed out with opposite way, otherwise may be used on herein the direct control signal of other types all equivalently about any embodiment of this discovery signal.In at least some embodiments, radio node 16 for group 12 according to timing in time, rule, mode that is sparse or other scheduled justice is for such as finding the transmission configuration resource of the direct control signal of signal and so on.Time (and possible frequency) resource for the direct control signal transmission/reception in arbitrary given group 12 is all defined about the timing reference of this group 12.In equipment 14 in arbitrary given group all carries out timing according to same timing reference to their transmission and reception, the direct control signal between these equipment 14 is in fact synchronous.On the contrary, because the equipment 14 in difference group 12 carries out timing according to different timing references to their transmission and reception, the direct control signal between the equipment 14 in different group 12 is in fact asynchronous.
In order to power efficiency, arbitrary given Wireless Telecom Equipment 14 operates in wake-up states or sleep state according to waking-sleep state circulation (such as, DRX circulation) up.In wake-up states, equipment 14 is such as by opening one or more receiver to monitor the direct control signal from other equipment 14.On the contrary, in sleep mode, equipment 14 does not such as monitor this direct control signal by closing one or more receiver.Correspondingly, equipment 14 saves more power when operating in sleep state than when operating in wake-up states.But the non-synchronized nature of the direct control signal between group threatens to the capacity of equipment of preserving power by this way.
But no matter the non-synchronized nature of this signaling is how according to the direct control signal between the equipment 14 monitoring group in a power efficient way of one or more embodiments herein.At this on the one hand, nominally any locking equipment 14 of giving transmits according to the timing reference of its group 12 and monitors direct control signal.Not so this just by hint equipment 14 must direct control signal in long-time section between monitoring group (because equipment 14 otherwise can due to group between control signal non-synchronized nature and do not have and when can expect the information that between group, control signal is relevant).One or more embodiments herein advantageously make equipment 14 can monitor asynchronous direct control signal, and unnecessaryly in so long-time section, remain on wake-up states.
Such as, Fig. 3 illustrates by for equipment 14 provides the message of particular types and make equipment 14 can accomplish the embodiment of this point.Particularly, at this on the one hand, the first Wireless Telecom Equipment 14-1 in group 12-1 is configured to realize the method 100 as shown in Figure 3 according to one or more embodiment.First equipment 14-1 is configured to such as receive specific message (frame 110) from the radio node 16-1 be associated with the group 12-1 of this equipment (that is, base station or bunch head).This particular message indicates the scope of the probable value of the deviation between the timing reference of this group 12 and common timing reference for each group in one or more groups 12, the uncertainty of wherein such this deviation of range specification.In certain embodiments, common timing, with reference to the timing reference being certain group 12, this means that this message directly indicates the scope of the possible deviation between the timing reference of different group.In other embodiments, common timing reference is absolute timing reference (such as, with any group 12 whole world be separated or general timing reference).In this case, this message still indicates the scope of the possible deviation between the timing reference of different group, but this message only indicates this point indirectly via absolute timing reference or in conjunction with other information.Therefore, in arbitrary situation, this message provides for the effective information of the first equipment 14-1 in order to determine between different group 12 (such as, between group 12-1 and group 12-2 and/or organize 12-1 and organize between 12-3) the scope of possible timing offset, which illustrate the uncertainty of this deviation.Such as, when group 12 corresponds to community 22, in at least some embodiments, this message comprises the instruction to the synchronous error/inaccuracy between Serving cell and other contiguous communities, and the equipment 14 of these other communities is transmitting interested direct control signal.
In any case, first equipment 14-1 is configured to the one or more scopes based on being indicated by the message received further, determines during it, estimate that (or possibility) will receive the time interval (frame 120) of direct control signal from the one or more equipment 14 other groups 12 (namely organizing 12-2 and/or group 12-3) one or more.That is, first equipment 14-1 determines according to indicated (multiple) scope: given discussed group (such as, group 12-1 and 12-2) between the scope of possible synchronism deviation, if in different groups (such as, group 12-2) in equipment (such as, equipment 14-4) transmit so direct control signal, this signaling should be received at the first equipment 14-1 place within the determined time interval.In any situation, make this to determine, during the time interval that it is configured to carry out operating in wake-up states during it is adjusted to and is just included in it by the first equipment 14-1, estimated that (or possibility) receives the time interval (frame 130) of direct control signal.In certain embodiments, such as, the first equipment 14-1 preferably estimate according to above determination or may can not receive the time interval of the direct control signal between group during operate in sleep mode.Acceptable delay when this effectively saves plant capacity and still guarantees the direct control signal between test set.
At least in general sense, the message that the first equipment 14-1 receives in figure 3 describes the non-synchronized nature of the direct control signal between the group in system 10 effectively, describes the uncertainty of this non-synchronized nature.In this sense, this message makes equipment 14-1 know the resource collection of following time effectively, direct control signal (such as, finding signal) or even the direct control signal from the equipment in other (such as adjacent) group 12 can be expected in this time.First equipment 14-1 advantageously utilizes this information relevant with the non-synchronized nature of signaling according to Fig. 3, more the timing of its direct control signal monitoring (such as, wake up-sleep state circulation or DRX) to be just cut into the timing that potential direct control signal receives.
In certain embodiments, the scope of the message received by indicating the maximum in the probable value of the deviation between the timing reference of given group 12 and common timing reference to indicate these probable values.That is, in maximum possible timing offset, indicate this scope (such as, there is known or predefined minimum possible timing offset).When such as organizing 12 and corresponding to community 22, timing range can describe the maximum timing offset between contiguous community 22.
But regardless of particular implementation, this message indicates timing offset scope significantly, instead of single timing alignment offset, one or more probabilistic source in this deviation to be described.In certain embodiments, such probabilistic source stems from the error margin equipment in same group 12 being considered be synchronized to same timing reference and allow.In fact, this error margin is effectively for the deviation between the actual timing reference that used by the equipment 14 in same group 12 reserves the scope of a probable value.The timing offset scope indicated by message comprises and describes this error margin in addition.
Alternatively or additionally, another probabilistic source stem from one group radio node 16 (such as, base station or bunch head) and this group 12 in equipment 14 between inherence propagation postpone.In fact, this inherence propagation postpones in the degree of the unknown, affect the perception of equipment to the timing reference of this group.
As another example, another probabilistic source stems from the inherence propagation delay between the equipment 14 of different group 12.The propagation delay of this unknown affects the perception of equipment to the extent of deviation between these timing references organized.
Probabilistic source illustrated by message is not limited to above example certainly.That is, generally speaking, one or more embodiments are herein susceptible to the such probabilistic any or all sources of one or more range specifications of the deviation of this message instruction, comprise those that do not summarized clearly by above example.
Utilize this probabilistic understanding, according to some embodiments, first equipment 14-1 advantageously compared to before determine to estimate to receive the time interval of direct control signal during it at the first equipment 14-1, shortens during it that it is configured to the time interval carrying out operating in wake-up states.Consider that-the sleep state (i.e. DRX) that wakes up such as shown in Fig. 4 circulates.As shown, the wake-up states timing of this circulation adjusts to the higher timing of power efficiency 22 by the first equipment 14-1 from the timing 20 that power efficiency is lower, in timing 20, equipment 14-1 operates in long-time section in wake-up states, and equipment 14-1 operates in short time period in wake-up states in timing 22.In fact, compared to the timing receiving direct control signal by having to during its wake-up states time interval, (being referred to herein as " DRX window ") was broadly included in it under conservative probability, (or may) (such as from the equipment 14-2 group 12-1 and the equipment 14-4 that organizes in 12-2) will receive time interval of direct control signal to the size that the first equipment 14-1 adjust its DRX window estimating during being just included in it.That is, for the object that direct control signal receives, the DRX period that equipment 14-1 adjusts it with make it during DC window be wake up and are sleeps at all the other time durations.Certainly, equipment 14-1 still can be waken up other operations for performing except direct control signal receives in other periods, but by doing like this, equipment 14-1 is only waken up to receive direct control signal within the time interval that expectation will receive so direct control signal.In these time intervals, as described above, describe the uncertainty of the timing offset between group 12-1 and group 12-2 significantly.When the group 12 in such as Fig. 1 corresponds to community 22, the width of DC window can depend on synchronous allowance between community 22 and/or synchronous accuracy and can in the rank of +/-some milliseconds.In either case, this means will still to there are some intrinsic power inefficient forthright (that is, DRX window still may be longer than the size that it will have when there is the absolutely not certainty of timing offset) in the signaling detection between the group of the first equipment.But, above wake-up states timing adjustment in certain embodiments by forthright for this power inefficient reduced to given this uncertain time possible degree.
In order to lower this uncertainty and thus increase power efficiency, according to other embodiments one or more herein, replace or combine and receive above message, Wireless Telecom Equipment 14 is independently estimated during it, estimate that (possibility) will receive the time interval of the direct control signal between group.Therefore, according to some embodiments, the first Wireless Telecom Equipment 14-1 is " intelligence " equipment, should alternatively or additionally realize the method 200 shown in Fig. 5 by " intelligence " equipment.
As shown in Figure 5, the first equipment 14-1 receives direct control signal (frame 210) from the second equipment 14-4 second group of 12-2.First equipment receives the timing of direct control signal from the second equipment 14-4 based on utilizing it, estimate that the first equipment 14-1 estimates to receive from the equipment 14 second group of 12-2 the time interval (frame 220) of direct control signal during it.Be similar to above embodiment, the first equipment 14-1 estimates to receive from the equipment second group of 12-2 the time interval (frame 230) of direct control signal during being then adjusted in the time interval that it is configured to carry out operating (for receiving signaling from second group of 12-2) in wake-up states during it and being just included in it.
Therefore, generally speaking, when the first equipment 14-1 successfully detects the direct control signal from the one or more equipment 14 in given group 12 based on it, estimates the timing received for the direct control signal of this group 12.In one embodiment, such as, the first equipment 14-1 successfully detects at least certain the direct control signal from the equipment belonging to given group 12 (such as, equipment 14-4).Then first equipment 14-1 estimates in this given group 12 timing be associated and shortens its reception aircraft window (such as, to be similar to mode illustrated in fig. 4) around reception timing example (instance) estimated.Received the correct timing estimating different groups (such as, community or bunch) by the direct control signal independently based on reality, the receiver window of Fig. 5 can be narrower than those receiver windows obtained in Fig. 3.
As shown in Figure 5, in certain embodiments, the first equipment 14-1 utilizes the group identification information passed on by direct control signal, to complete estimation described above.Particularly, in these embodiments, first equipment 14-1 based on this group extracted from direct control signal mark (such as, cell ID, PLMN mark and/or bunch mark), be designated by direct control signal and be received (frame 212) certainly from particular group, i.e. the second equipment 14-4 organized 12-2, this method depends on equipment 14 transmission and identifies relevant information to assist the correct timing of other equipment 14 be associated with their group with their group.In arbitrary situation, completed this mark, then the first equipment 14-1 receives from utilizing it timing reference (or scope of possible timing reference) (frame 214) of this particular group 12-2 of timing acquisition of direct control signal.Based on the hypothesis equipment 14 in this particular group 12-2 being transmitted to direct control signal according to obtained timing reference, the first equipment 14-1 advantageously estimates the time interval estimating to receive from the equipment 14 this particular group 12-2 at the first equipment 14-1 place direct control signal during it.
In at least some embodiments, power effectively wakes up by above estimation-and sleep state delay is until receive enough direct control signals and be used for estimating discussed timing reference.So, in this case, autonomous method of estimation gives the power efficiency lower than the Signalling method described about Fig. 3.But, in certain embodiments, above estimation provides more certainty of the timing offset between group 12, this means that mode compared to performing in Signalling method, it wake up-sleep state timing more just is cut into potential direct control signal and receives by wireless device 14-1.In fact, in at least some embodiments, first equipment 14-1 oneself determines the scope of the probable value of the deviation between the timing reference of first and second groups of 12-1,12-2 by it, perform its estimation in the frame 220 of Fig. 5, wherein as described above, this range specification uncertainty of this deviation.That is, the first equipment 14-1, by considering above-mentioned one or more probabilistic source, comes oneself effectively to estimate or with this uncertainty of additive method characterization.Such as, in one embodiment, the first equipment 14-1 oneself is based in the following or the multinomial scope determining the probable value of deviation: (i) makes the equipment 14 in first or second group of 12-1,12-2 be considered the error margin being synchronized to same timing reference and allowing; (ii) inherence propagation between the equipment 14 in the radio node 16 that is associated of first or second group of 12-1,12-2 and this group postpones; And the inherence propagation between (iii) different equipment 14 organized in 12 postpones.One or more parameters that first equipment 14-1 can such as be associated based on the communication in discussed difference group 12 and/or between different group 12 in certain embodiments (such as, the communication protocol adopted) determine the part of the scope of the probable value of deviation, this part can belong to probabilistic any given source.
No matter adopt the autonomous method of estimation of Fig. 5 or the Signalling method of Fig. 3, in certain embodiments, the first equipment 14-1 realizes some other feature to preserve power further and/or to guarantee that direct control signal receives.In one or more embodiments, such as by detecting in response to direct control signal/decoding and be transformed into sleep state, nominally the first equipment 14-1 ratio according to adjusted waking up-sleep state circulation is configured and is earlier transformed into sleep state.Particularly, in certain embodiments, the first equipment 14-1 receives the decode direct control signal during the time interval that the first equipment is in wake-up states.Nominally no matter the first equipment 14-1 is still configured to be in wake-up states (namely circulating according to by the waking up of just cutting-sleep state), first equipment 14-1 can not receive the such hypothesis of other direct control signal or knowledge based on expectation, is switched to sleep state ahead of time when so direct control signal decoding.Such as, once the first equipment 14-1 correctly detects arbitrary direct control signal in DC window, it enters sleep state, although DC window not yet expires.This is because the direct control signal of correspondence has been received and has not needed to keep waking up and consuming cells at this DC window example (such as corresponding to wherein directly control signal is that certain finding signaling finds example) for the first equipment 14-1.In any case, at least in certain embodiments, nominally this is switched to sleep state ahead of time otherwise can not affect the waking up of the first equipment 14-1 be configured-sleep state circulation.
According to other embodiments one or more, nominally the first equipment 14-1 extends aperiodically or periodically during it, it is configured to be in the time interval of wake-up states, thus makes these time intervals no longer as described above by just cutting.It is to upgrade its cutting just to wakeup time interval subsequently that first equipment 14-1 so does.In fact, when when these receive direct control signal during the time interval of prolongation, the time interval that it is configured to carry out operating in wake-up states during it is readjusted the time interval for estimating to receive direct control signal during being just included in it by the first equipment 14-1, to illustrate that direct control signal is received during the time interval through extending.By this way, because the first equipment is to the last just cutting at its wakeup time interval (this and undeclared new group 12 like this), the first equipment 14-1 can not omit the direct control signal of the new group 12 of having come equipment 14 in communication range.
In fact, once shorten receiver window according to such as one of above embodiment, the first equipment 14-1 is risky can omit the new direct control signal fallen within beyond narrow receiver window.This situation can be such as when the first equipment 14-1 move to new community or bunch near time.In order to avoid such problem, as just described, the first equipment 14-1 periodically or aperiodically comes to perform longer retrieval to direct control signal based on longer wakeup time.During such wakeup time, the first equipment 14-1 may can obtain the timing of all of the vicinity transmitting direct control signal or at least most of equipment 14.In certain embodiments, relate to the longer wakeup time finding signaling and such as correspond to complete discovery circulation approx, the discovery signal that all devices 14 related in discovery at least transmits them in this complete discovery circulation once.Once obtain the timing for such equipment 14, in certain embodiments, DRX window is correspondingly shortened.
Consider the example of Fig. 6.As shown in frame 1, its wakeup time gap is initially cropped to the estimated timing receiving direct control signal from the equipment 14 of group 12-2 by equipment 14-1.But after so having done, the first equipment 14-1 has come in the communication range of group 12-3, be the member of group 12-3 at this hypothesis equipment 14-7.Detect direct control signal under these circumstances in order to ensure the first equipment 14-1, the first equipment 14-1 is configured to perform longer wake up (DRX) aperiodically or periodically and circulates, as shown in frame 2.During so longer wakeup cycle, the first equipment 14-1 utilizes different timings (because equipment 14-7 belongs to the group different from equipment 14-4) to detect direct control signal from equipment 14-7.Afterwards, certainly, its (DRX) circulation that wakes up just is cropped to both direct control signal reception timings estimated of group 12-2 and 12-3 (namely for equipment 14-4 and 14-7) around by the first equipment 14-1.As shown in frame 3, such as in certain embodiments, the first equipment 14-1 is configured to even carry out operating (such as, in aperiodic mode) with sleep state between the receiver window of the expectation of group 12-2 and group 12-3.
In some cases, other embodiments one or more in addition abandon at least some time interval in the following time interval, nominally be configured to operate in wake-up states at these periods first in time interval equipment 14-1.These embodiments are such as no longer may being in due to mobility and other reasons, equipment 14 contiguous or giving advantage when may stop transmitting direct control signal.In this case, for receiving equipment 14, keep monitoring resource when no longer including equipment 14 and transmitting, this waste that will be a kind of energy.
Therefore, according to these embodiments, the first equipment 14 operates during the time resource periodically reappeared in wake-up states, and this time resource is just included in the time interval of the direct control signal of its period first equipment 14-1 intended recipient.In the time quantum of definition, not yet on this time resource, detect direct control signal in response to determining, the first equipment 14-1 increases the periodicity of this time resource.That is, interval between the periodicity reproduction of this time resource (namely, interval between the periodicity reproduction of DRX window example) be increased, instead of abandon the detection to this resource completely, the direct control signal of making provision against emergencies in this resource is restarted.In fact, on time resource, restarted direct control signal in response to detecting, the first equipment 14-1 reduces the periodicity of this time resource again.
Fig. 7 illustrates these embodiments with simple example.As shown, first equipment 14-1 is configured to operate in wake-up states during the time resource periodically reappeared, and the time resource that this periodicity is reappeared just is included in its period first equipment 14-1 and estimates from the equipment group 12-2, comprises the time interval receiving control signal from equipment 14-4 as shown.In response to this point, the first equipment 14-1 increases the periodicity (that is, thus it has longer periodicity as shown) of this time resource.Finally, at time t2, another equipment 14-5 in group 1202 starts to transmit direct control signal.First equipment 14-1 misses first direct control signal at time t2 place, because the longer periodicity of the first equipment 14-1 preserves energy.But at time t3, the first equipment 14-1 detects the direct control signal transmission of equipment 14-5 and will recover its comparatively short period property as before.
A specific implementation mode of such embodiment relates to no matter when detecting that direct control signal corresponds to certain timing example and DRX window, and the first equipment 14-1 all resets timer.If timer exceedes certain value (namely DC signaling not yet being detected in certain time in DRX window) before new direct control signal detected in same DRX window, then increase the interval between DRX window.This is to save plant capacity and guaranteeing to detect whether restart activity on the resource at some time later.If activity restarts, in certain embodiments, monitor interval, interval namely between DRX window is reduced again.
Notice in one or more embodiments, the different range of the probable value of the deviation between the timing reference of a group and common timing reference may be there is.These different range can such as be arranged to the different resource transmitting direct control signal between devices and be associated.
In view of above-mentioned amendment and modification, Fig. 8 illustrates an example embodiment of Wireless Telecom Equipment 14.Wireless Telecom Equipment 14 comprises the one or more treatment circuits 30 being configured to the method performed in Fig. 3 and/or Fig. 5.Wireless Telecom Equipment 14 also comprises the one or more radio transceiver circuit 32 being configured to transmit simultaneously and receive radio signals.Such as, one or more radio transceiver circuit 32 comprises various radio-frequency unit (not shown), to receive via one or more antenna to use known signal treatment technology and process from the radio signal of other radio node.Significantly, one or more radio transceiver circuit 32 is also configured to such as directly directly transmit radio signal/directly receive radio signals from other Wireless Telecom Equipments 14 to other Wireless Telecom Equipments 14 via equipment road devices communicating.
In certain embodiments, Wireless Telecom Equipment 14 comprises one or more for storing the memory 34 of the software such as performed by one or more treatment circuit 30 further.Software comprises and makes one or more treatment circuit 30 perform the instruction of the method in Fig. 3 and/or Fig. 5.Memory 34 can be hard disk, magnetic storage medium, portable computer diskette or CD, flash memory, random access memory (RAM) etc.In addition, memory 34 can be the internal register memory of processor.
Certainly, not the institute of technology described herein all must perform in steps in single microprocessor or even in individual module.Therefore, the control circuit of more summarizing being configured to realize aforesaid operations can have the direct physical configuration corresponding to treatment circuit 30 or can realize in the module of two or more or unit.Wireless Telecom Equipment 14 such as can comprise different functional units, and each unit is configured to the particular step realizing Fig. 3 and/or Fig. 5.
Those skilled in the art can also recognize, embodiment herein also comprises corresponding computer program.Computer program comprises and makes Wireless Telecom Equipment 14 perform the instruction of above-mentioned arbitrary process when performing at least one processor of Wireless Telecom Equipment 14.Embodiment comprises the carrier comprising this computer program further.This carrier can comprise one in the signal of telecommunication, light signal, radio signal or computer-readable recording medium.Those skilled in the art can recognize, comprise in memory 34 the one or more code modules comprised according to this computer program of some embodiments, each module is configured to the particular step realizing Fig. 3 and/or Fig. 5.
When using in this article, term " Wireless Telecom Equipment " 14 is configured to and another node wireless ground any equipment of carry out communicating and directly carry out with another this Wireless Telecom Equipment 14 communicating (that is, via device-to-device communication).Therefore Wireless Telecom Equipment 14 comprises subscriber equipment (UE), mobile phone, cell phone, is equipped with the personal digital assistant of radio communication capability (PDA), smart phone, is equipped with the notebook of inside or outside mobile broadband modulator-demodulator or personal computer (PC), the board PC with radio communication capability, portable electronic radio communication equipment, the sensor device being equipped with radio communication capability, machine to machine equipment etc.
In addition, when using in this article, term " radio network node " refers to the radio node of the part as radio access network 20.Radio network node such as comprises the eNB in LTE, the Controlling vertex controlling one or more remote radio unit (RRU), radio base station 16, access point etc.Radio network node in some embodiments is configured to operate in so-called system bandwidth.In certain embodiments, a part for this system bandwidth is preserved for D2D communication statically or dynamically.Therefore, DC bandwidth can be used for being assigned to such as DC message.
In addition, when using in this article, timing reference comprises any reference of serving as the common source of Domain Synchronous in time domain.Timing reference such as can comprise defined transmission or the timing of receiver window.In LTE, such as these comprise the timing of LTE subframe in certain embodiments.
Other again, direct control signal resources different herein has identical timing window width in certain embodiments.But in other embodiments, different direct control signal resources is associated from different timing window width.
Those skilled in the art also will recognize, described various " circuit " can refer to the combination of analog circuit and digital circuit, comprise that utilization is carried out realizing when executed by one or more processors as above, store software in memory and/or store one or more processors of firmware configuration in memory.One or more this processor and other digital hardwares can be included in single asic (ASIC), or some processors and various digital hardware can be distributed in individual packages or be assembled on the some separate parts in SOC (system on a chip) (SoC).
Thus, those skilled in the art will recognize, the present invention can realize in other modes except those modes clearly set forth in this article, and does not depart from actual characteristic of the present invention.In addition, above-described embodiment can independent of realizing each other or with being bonded to each other.Present example is considered in all respects as exemplary instead of restrictive thus.
Claims (23)
1. the method realized by the first Wireless Telecom Equipment (14-1) in first group of (12-1) Wireless Telecom Equipment in many groups of (12) Wireless Telecom Equipments (14) in wireless communication system (10), equipment (14) wherein in arbitrary given group (12) is synchronized to same timing reference and equipment (14) in different groups (12) is asynchronous to same timing reference, and described method characteristic is:
Receive (110) message, described message indicates the scope of the probable value of the deviation between the timing reference of this group (12) and common timing reference for each group in one or more described group (12), the uncertainty of deviation described in described range specification;
Based on the one or more scopes indicated by described message, determine that (120) estimate to receive from the one or more equipment (14) one or more other groups (12-2,12-3) at described first equipment (14-1) place the time interval of direct control signal during it; And
Time interval adjustment (130) the first equipment (14-1) described during it being configured to carry out operating in wake-up states be that during being just included in it, expectation will receive time interval of described direct control signal, wherein said first equipment (14-1) operates in described wake-up states or sleep state, and wherein in described wake-up states and described sleep state, described first equipment (14-1) monitors direct control signal from other equipment (14) and the direct control signal of not monitoring from other equipment (14) respectively.
2. method according to claim 1, the scope of wherein said message by indicating the maximum in the probable value of the deviation between the timing reference of given group and the reference of described common timing to indicate these probable values.
3. the method according to any one of claim 1-2, wherein said common timing reference is the timing reference of some group in described group (12).
4. the method according to any one of claim 1-3, wherein said message indicates the different range of the probable value of the deviation between the timing reference of this group (12) and the reference of described common timing at least one group in described group (12), and wherein said different range is associated with the different resource being arranged to directly control channel between equipment (14).
5. the method realized by the first Wireless Telecom Equipment (14-1) in first group of (12-1) Wireless Telecom Equipment in many groups of (12) Wireless Telecom Equipments (14) in wireless communication system (10), equipment (14) wherein in arbitrary given group (12) is synchronized to same timing reference and equipment (14) in different groups (12) is asynchronous to same timing reference, and described method characteristic is:
(210) directly control signal is received from the second equipment (14-4) in second described group group (12-2);
Receiving the timing of described direct control signal based on utilizing it from described second equipment (14-4), estimating that (220) estimate the time interval that will receive direct control signal at described first equipment (14-1) place from the equipment described second group (12-2) during it; And
Time interval adjustment (230) the first equipment (14-1) described during it being configured to carry out operating in wake-up states be that during being just included in it, expectation will receive described time interval of described direct control signal from the equipment described second group (12-2), wherein said first equipment (14-1) operates in described wake-up states or sleep state, and wherein in described wake-up states and described sleep state, described first equipment (14-1) monitors direct control signal from other equipment (14) and the direct control signal of not monitoring from other equipment (14) respectively.
6. method according to claim 5, wherein said estimation comprises:
Based on the mark of described second group (12-2) that extract from described direct control signal, the described direct control signal received from described second equipment (14-4) is identified (212) for be received from the equipment described second group (12-2);
Receive the timing reference of described timing acquisition (214) described second group (12-2) or the scope of possible timing reference of described direct control signal from described second equipment (14-4) from utilizing it; And
Based on the hypothesis equipment in described second group (12-2) being transmitted to direct control signal according to the scope of obtained timing reference or possible timing reference, perform described estimation.
7. the method according to any one of claim 5-6, wherein said estimation comprises the scope of the probable value of the deviation determined between described first group and the timing reference of described second group (12-1,12-2), the uncertainty of deviation described in described range specification.
8. method according to claim 7, wherein saidly determine based in the following or multinomially to perform:
The equipment in described first group or described second group (12-1,12-2) is made to be considered the error margin being synchronized to same timing reference and allowing;
Inherence propagation between equipment (14) in the radio node (16) that described first group or described second group (12-1,12-2) are associated and this group postpones; And
Inherence propagation between equipment (14) in different group (12) postpones.
9. method according to claim 8, wherein saidly determines to comprise the part that the communication protocol adopted based on the communication in different groups (12) and/or between different groups (12) determines the scope of the probable value of deviation.
10. the method according to any one of claim 1-9, wherein said adjustment comprise compared to determine described first equipment (14-1) or estimate during it estimate to receive the described time interval of described direct control signal before, shorten described first equipment (14-1) during it and be configured to the described time interval carrying out operating in described wake-up states.
11. methods according to any one of claim 1-10, be further characterized in that, as the result of described adjustment, preferably estimating during described first equipment (14-1) place can not receive the time interval of described direct control signal, in described sleep state, operate described first equipment (14-1).
12. methods according to any one of claim 1-11, be further characterized in that, direct control signal is received the decode, nominally earlier described first equipment (14-1) is transformed into sleep state than being configured according to described adjustment during being in the time interval of described wake-up states described first equipment (14-1).
13. methods according to any one of claim 1-12, are further characterized in that:
To extend during it described first equipment (14-1) aperiodically or periodically nominally be configured to the time interval carrying out operating in described wake-up states according to described adjustment, thus during making these time intervals no longer just be included in it, estimate the described time interval that will receive described direct control signal; And
When receiving direct control signal during the described time interval through extending, is readjusted the described time interval for estimating to receive described direct control signal during being just included in it time interval that the first equipment (14-1) described during it is configured to carry out operating in described wake-up states, to illustrate that described direct control signal is received during the described time interval through extending.
14. methods according to any one of claim 1-13, wherein according to described adjustment, described first equipment (14-1) is nominally be configured to operate in wake-up states during the time resource periodically reappeared, the time interval of the direct control signal of described first equipment (14-1) intended recipient during described time resource is just included in it, and wherein said method is further characterized in that:
In the time quantum of definition, not yet on described time resource, detecting direct control signal in response to determining, increasing the periodicity of described time resource; And
On described time resource, restarting direct control signal in response to detecting, having reduced the periodicity of described time resource.
15. methods according to any one of claim 1-14, wherein said group (12) are corresponding to the difference bunch of equipment (14), each cocooning tool has a bunch head, and described bunch of head belongs to the equipment (14) of described bunch and the equipment (14) in described bunch of assigning transmits the resource of direct control signal thereon to other equipment (14).
16. methods according to any one of claim 1-14, wherein said wireless communication system (10) comprises cellular communication system, it is the radio network node (16) that equipment (14) provides radio to cover that described system is included in respective cell (22), and wherein said group (12) are corresponding to the different districts (22) in described system (10).
The first Wireless Telecom Equipment (14-1) in first group of (12-1) Wireless Telecom Equipment in many groups of (12) Wireless Telecom Equipments (14) in 17. 1 kinds of wireless communication systems (10), equipment (14) wherein in arbitrary given group (12) is synchronized to same timing reference and equipment (14) in different groups (12) is asynchronous to same timing reference, and wherein said first Wireless Telecom Equipment (14-1) is configured to:
Receipt message, described message indicates the scope of the probable value of the deviation between the timing reference of this group (12) and common timing reference for each group in one or more described group (12), the uncertainty of deviation described in described range specification;
Based on the one or more scopes indicated by described message, determine the time interval estimating to receive from the one or more equipment (14) in other groups (12-2,12-3) one or more at described first equipment (14-1) place direct control signal during it; And
Is adjusted to the described time interval estimating to receive described direct control signal during being just included in it time interval that the first equipment (14-1) described during it is configured to carry out operating in wake-up states, wherein said first equipment (14-1) operates in described wake-up states or sleep state, and wherein in described wake-up states and described sleep state, described first equipment (14-1) monitors direct control signal from other equipment (14) and the direct control signal of not monitoring from other equipment (14) respectively.
18. first Wireless Telecom Equipments according to claim 17, are configured to perform the method according to any one of claim 2-4.
The first Wireless Telecom Equipment (14-1) in first group of (12-1) Wireless Telecom Equipment in many groups of (12) Wireless Telecom Equipments (14) in 19. 1 kinds of wireless communication systems (10), equipment (14) wherein in arbitrary given group (12) is synchronized to same timing reference and equipment (14) in different groups (12) is asynchronous to same timing reference, and wherein said first Wireless Telecom Equipment (14-1) is configured to:
Direct control signal is received from the second equipment (14-4) in second described group group (12-2);
Receiving the timing of described direct control signal based on utilizing it from described second equipment (14-4), estimating the time interval estimating to receive from the equipment described second group (12-2) at described first equipment (14-1) place direct control signal during it; And
Is adjusted to the described time interval estimating to receive from the equipment described second group (12-2) direct control signal during being just included in it time interval that the first equipment (14-1) described during it is configured to carry out operating in wake-up states, wherein said first equipment (14-1) operates in described wake-up states or sleep state, and wherein in described wake-up states and described sleep state, described first equipment (14-1) monitors direct control signal from other equipment (14) and the direct control signal of not monitoring from other equipment (14) respectively.
20. first Wireless Telecom Equipments according to claim 19, are configured to perform the method according to any one of claim 6-9.
21. the first Wireless Telecom Equipments according to any one in claim 17-20, are configured to perform the method according to any one of claim 10-15.
22. 1 kinds of computer programs comprising instruction, described instruction makes described first Wireless Telecom Equipment (14-1) perform method according to any one of claim 1-16 when at least one processor by the first Wireless Telecom Equipment (14-1) in wireless communication system (10) performs.
23. 1 kinds of carriers comprising computer program according to claim 22, wherein said carrier is the one in the signal of telecommunication, light signal, radio signal or computer-readable recording medium.
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| CN110073697A (en) * | 2016-12-14 | 2019-07-30 | 瑞典爱立信有限公司 | Wake-up signal construction |
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